Granted Patent
Utility
US 4,421,042 · App. 06/507,207
Sewing machine head end module construction
Inventor:
Karl H. Killinger
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Jun 22, 1983
Inventor
Karl H. Killinger
Assignee (at issue)
The Singer Company Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.